LED modular lighting --LED new trend of development is a basic human need, but also represents the level of illumination of economic activity. In recent years, due to global economic growth, continued urbanization, the expansion of non-urban power grid construction and other factors, led to the increase in the general construction of buildings and manufacturing, are making rapid growth in demand led panel lighting, energy consumption has continued to grow. LED as a new light source, is increasingly being integrated into people's daily lives, it is inseparable from the development of the demand for lighting. Compared to traditional light sources (such as fluorescent and incandescent), LED at close to the theoretical conversion efficiency than conventional light source efficiency 5-20 times higher. Even at this stage of mass production light effects, its level is between 2-15 times, combined with the advantages of its directivity, this gap will be even greater. Due to changes in light principle, the life will be much higher than traditional light sources. Also led display price, due to the LED also has a number of advantages for health and the environment without hazards, which at this stage has been recognized as the next generation of the most suitable light source. However, LED lighting has not been widely promoted, can not enter millions of households led what is the meaning, the main reason is the high price of LED lighting, how to reduce the price of LED lighting, markets, and experience tells us --- LED modular. Color LED module board hardware components and working principle common indoor color LED module board circuit led, 4-16 decoder which line scan circuit consists of two 74HCl38 (3-8 decoder) which adds a plurality 4953 (MOS tube) composed of scanning 1/16. Upper and lower halves respectively, by two sets with screen 74HC595 serial shift registers for red, green display columns of input data, in 64 × 32 standard LED unit boards, each serial shift register has eight 74HC595 cascade, 4 Group share of 32 74HC595. Indoor led display _ Gao Jin photovoltaic (certified) _led provided by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.gjlled.cn) is an industry leader in Jinan, Shandong, liquid crystal devices, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Gao Jin photoelectric leadership with the staff warmly welcome all inquiries negotiations to create high gold Photoelectric better future.